The Mastic Doctor team standing beside their branded vans outside an office building
East Dunbartonshire · Scotland

Fire-rated sealing and fire stopping in Lenzie, East Dunbartonshire

Fire-rated and intumescent sealing of service penetrations and linear gaps across Lenzie, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Openings found when ceilings come down for a refit
  • Damaged fire seals in risers and voids
  • Penetration schedules that need working through
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Signed off, with 12 months’ guarantee.
South East, London & Scotland
CHAS accredited
Fully insured: £5m PL

Fire stopping in Lenzie

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

What happens if it’s left?

Open service penetrations matter on ordinary days, not just in a fire: they also carry noise, draughts and smells between rooms. The specified fire seal closes the gap for all of these. Buildings in towns like Lenzie often have joints of similar age across a whole building or estate. Doing them together saves return visits.

Cost follows what’s involved: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a fixed quote.

Why clients in Lenzie choose us

  • Commercial sealant work since 2005
  • CHAS accredited contractor
  • Products installed to the manufacturer’s instructions
  • One contact handling all your sites

Take a look at what affects the cost and our accreditations and insurance.

About our fire stopping in Lenzie

Sealant is the specified answer for plenty of openings, such as metal pipes, cables and some small ducts where the detail covers them. Other openings need collars, wraps, batts, pillows or boards. We use sealant where it is the specified product, and we tell you when a detail calls for something else. Site teams most often ask us about openings left by services added after handover and builders’ foam or ordinary silicone in compartment walls, on pipe penetrations, service gaps in risers and cable penetrations. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Lenzie is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.

When contractors add cables and pipes in a Scottish town building, gaps through fire-resisting walls are often left behind. If fire-rated sealant is the named product, it is installed as tested; if the detail needs a different item, we will point that out.

Every job we finish is backed by a 12-month workmanship guarantee, wherever the site is. If our installation lets you down in that time, we return and fix it.

The Mastic Doctor team beside their liveried vans in front of an office building
Location
Lenzie (G66)
Region
East Dunbartonshire
Guarantee
12 months on every job
Quote
A fixed quote before we start
Call
01277 525 020
Updated
3 November 2026

On site: what to expect

On arrival, we report to your site contact and complete whatever induction the building runs. Everything around the joints gets protected before any cutting starts, with the work itself usually taking anything from one day to a planned run of visits, depending on the number of seals and the access. If you manage more than one building in Lenzie, they can be grouped. Give us access times for each.

  1. First we confirm the product and tested details named in the specification.
  2. We sort the openings by the detail each one needs.
  3. Improvised fillers and failed sealant are removed.
  4. Where the detail needs backing, it goes in at the stated depth.
  5. Fire-rated or intumescent sealant goes in around the services and is tooled off.
  6. Completed areas are checked with you, with the records agreed when we quoted.

Before we start on site

  • Tell us which areas need to stay in use
  • Confirm the product named in the specification
  • Make sure the joints can be reached

Getting a fixed quote

Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. To get it moving, call the office on 01277 525 020 or email drawings and photos.

Ask for a quote

Advice

Different surfaces, different methods

Drylining partitions

Drylined fire walls are tested in a particular build-up. The sealant detail has to be tested in that wall type, with the stated board layers before sealing.

Masonry and concrete

Core-drilled holes are neat; broken-out ones rarely are. The gap is measured at the widest point against the detail’s limits, and any outside it are raised with you.

After the work

Regular inspection catches problems early. Specifically:

  • Ask the designer to confirm details early on refits
  • Arrange inspection before areas are covered up
  • Record which product was used where
  • Report damaged or disturbed seals as soon as they’re spotted

Don’t patch a fire-rated seal with anything outside its tested detail. A repair should use the original product, installed the same way unless the designer specifies otherwise.

Regular walk-rounds of service areas are worth the time. Catching a damaged seal early keeps the fix small.

Questions we are asked in Lenzie

How do the Scottish rules apply to fire-rated sealing in Lenzie?

The non-domestic Technical Handbook, clause 2.1.14, expects a penetration to keep at least the wall or floor’s fire resistance period, with proprietary products tested for the use they’re put to. Design sits with the designer and the verifier; installation to the tested detail is our part.

Does your area include sites such as Millersneuk Shopping Centre, near Lenzie?

Yes, sites like Millersneuk Shopping Centre are within our area, along with the rest of Lenzie. Send details of the unit and the work through our quote form for a quick quote.

Can you work to our specification?

Yes. The specification and the manufacturer’s installation guidance are what we work to, and any queries are raised before we start.

How soon can the area be used again?

That comes down to the sealant and the temperature. Some take light use quickly, others need longer to cure, so we’ll confirm the curing time on the day.

Can one quote cover more than one building?

Yes. A group of buildings can go on one quote, and you deal with one contact throughout across South East England, Greater London and Scotland.

What’s the quickest route to a quote?

The quote form is the simplest route, though you can also speak to us on 01277 525 020 or email us. Include photos or drawings if you have them.

How long do sealant joints last?

It depends on movement, UV and weather, cleaning, traffic and the product. Treat them as maintenance items and inspect them regularly.

Service penetrations in Lenzie buildings

Scottish guidance (non-domestic Technical Handbook, clause 2.1.14) asks that penetrations match at least the fire resistance period of the element they pass through, with proprietary products, intumescent ones included, tested for their end use. We install fire-rated sealant to that tested detail where it is specified.

Colleges such as New College Lanarkshire - Kirkintilloch Campus (0.9 miles north of Lenzie) add IT and services as courses change, and each new penetration through a fire-resisting wall needs sealing with the specified product. Refits at places like Millersneuk Shopping Centre, less than half a mile to the south-east of Lenzie, often reroute services through walls between units.

Lenzie is about 6 miles west of Cumbernauld, in East Dunbartonshire. We cover commercial sites throughout Lenzie, whether it’s a single job or part of a planned programme. We work across 24 places in East Dunbartonshire. There’s a separate page for Glasgow, roughly 7 miles from Lenzie.

We take on service penetrations across the G66 postcode area, for business premises of every kind. We cover commercial and managed buildings on Moss Road, Cult Road and Loch Road. Lenzie sits on or close to the A806, which helps when planning parking and deliveries for the job. Sites close to Lenzie are covered too, including Kirkintilloch (1 mile north), Woodilee Village (1 mile north-east), Auchinloch (1 mile south), Waterside (1 mile north-east) and Birdston (2 miles north). A short drive away, we cover Bearsden (7 miles west), Bishopbriggs (3 miles south-west), Milngavie (7 miles west), Westerton (7 miles west), Colston (4 miles south-west) and Lennoxtown (4 miles north-west).

Around Lenzie

Lenzie has its own railway station: Lenzie station. Other landmarks nearby include Glasgow Fort (3.6 miles south) and Barony Chambers Museum (1.3 miles north). Green spaces nearby include Bar Hill and Lenzie Moss.

Map of Lenzie © OpenStreetMap contributors

When to call us in Lenzie

When a seal departs from its tested detail, the evidence no longer covers it. Gaps beyond the tested size, shallow sealant, no backing where it was needed, or products from different systems mixed together are the usual culprits.

These are often picked up first by site or facilities staff:

  • Openings left by services added after handover
  • Head-of-wall gaps with no fire seal
  • Builders’ foam or ordinary silicone in compartment walls
  • Improvised or mixed-product fire seals

Hotels such as The Broadcroft Hotel, 1.2 miles to the north of Lenzie, rely on fire-resisting walls between bedrooms and corridors, and refits that add services leave penetrations to seal where fire-rated sealant is specified.

Before you book anyone

  • Their approach to joint depth and backing
  • How long is the guarantee, and what does it include?
  • What level of public liability insurance do they hold?
  • Will RAMS and insurance details be available?

Choosing a commercial sealant contractor

Work for main contractors and building owners

When you manage a building on behalf of an owner, clear figures and clear communication matter. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative, plus a 12-month guarantee.

We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Lenzie can form part of a wider programme across East Dunbartonshire.

Accreditations

Trusted. Accredited. Insured.